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    Methanol plant retrofit for acetic acid manufacture
    51.
    发明授权
    Methanol plant retrofit for acetic acid manufacture 有权
    用于乙酸制造的甲醇装置改造

    公开(公告)号：US06232352B1

    公开(公告)日：2001-05-15

    申请号：US09547831

    申请日：2000-04-12

    申请人： Kenneth Ebenes Vidalin

    发明人： Kenneth Ebenes Vidalin

    IPC分类号： C07C2700

    CPC分类号： C07C67/36 ,  B01J2219/00024 ,  C01B3/384 ,  C01B3/50 ,  C01B13/0248 ,  C01B2203/0233 ,  C01B2203/0405 ,  C01B2203/0415 ,  C01B2203/043 ,  C01B2203/046 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/061 ,  C01B2203/068 ,  C01B2203/0816 ,  C01B2203/0822 ,  C01B2203/1058 ,  C01B2203/1241 ,  C01B2203/148 ,  C01B2210/0046 ,  C01C1/0488 ,  C07C29/1518 ,  C07C29/152 ,  C07C51/12 ,  F25J3/0223 ,  F25J3/0252 ,  F25J3/0261 ,  F25J3/04527 ,  F25J3/04587 ,  F25J2290/80 ,  Y02P20/128 ,  Y02P20/129 ,  Y02P20/152 ,  Y02P20/52 ,  C07C53/08 ,  C07C69/14 ,  C07C69/06 ,  C07C31/04

    摘要： The retrofitting of an existing methanol or methanol/ammonia plant to make acetic acid is disclosed. The existing plant has a reformer to which natural gas or another hydrocarbon and steam (water) are fed. Syngas is formed in the reformer. All or part of the syngas is processed to separate out carbon dioxide, carbon monoxide and hydrogen, and the separated carbon dioxide is fed either to the existing methanol synthesis loop for methanol synthesis, or back into the feed to the reformer to enhance carbon monoxide formation in the syngas. Any remaining syngas not fed to the carbon dioxide separator can be converted to methanol in the existing methanol synthesis loop along with carbon dioxide from the separator and/or imported carbon dioxide, and hydrogen from the separator. The separated carbon monoxide is then reacted with the methanol to produce acetic acid or an acetic acid precursor by a conventional process. Also disclosed is the reaction of separated hydrogen with nitrogen, in a conventional manner, to produce ammonia. Also disclosed is the reaction of a portion of the acetic acid in a conventional manner with oxygen and ethylene to form vinyl acetate monomer. The nitrogen for the added ammonia capacity in a retrofit of an original methanol plant comprising an ammonia synthesis loop, and the oxygen for the vinyl acetate monomer process, are obtained from a new air separation unit.

    摘要翻译： 公开了现有的甲醇或甲醇/氨装置的改造以制备乙酸。 现有的工厂具有天然气或另一种烃和蒸汽（水）供给的重整器。 合成气在重整器中形成。 处理全部或部分合成气以分离出二氧化碳，一氧化碳和氢气，将分离的二氧化碳送入现有的甲醇合成回路进行甲醇合成，或回到重整器的进料中以增强一氧化碳的形成 在合成气中。 未进料到二氧化碳分离器中的任何剩余的合成气可以在现有的甲醇合成回路中转化为甲醇，以及来自分离器的二氧化碳和/或进口的二氧化碳，以及来自分离器的氢。 然后将分离的一氧化碳与甲醇反应，通过常规方法制备乙酸或乙酸前体。 还公开了以常规方式分离的氢气与氮气的反应以产生氨。 还公开了一部分乙酸以常规方式与氧和乙烯反应形成乙酸乙烯酯单体。 从新的空气分离单元获得在包含氨合成环的原始甲醇装置的改造中添加的氨的氮气和用于乙酸乙烯酯单体方法的氧气。

    Low energy process for separating carbon dioxide and acid gases from a carbonaceous off-gas
    54.
    发明授权
    Low energy process for separating carbon dioxide and acid gases from a carbonaceous off-gas 失效
    用于从碳质废气中分离二氧化碳和酸性气体的低能量过程

    公开(公告)号：US4449994A

    公开(公告)日：1984-05-22

    申请号：US339359

    申请日：1982-01-15

    申请人： William P. Hegarty ,  William P. Schmidt

    发明人： William P. Hegarty ,  William P. Schmidt

    IPC分类号： F25J3/02 ,  F25J3/06 ,  F25J3/00

    CPC分类号： F25J3/067 ,  F25J3/0219 ,  F25J3/0247 ,  F25J3/0266 ,  F25J3/04527 ,  F25J3/062 ,  F25J3/065 ,  F25J2200/02 ,  F25J2200/74 ,  F25J2210/12 ,  F25J2210/70 ,  F25J2220/82 ,  F25J2230/04 ,  F25J2230/30 ,  F25J2260/80 ,  F25J2270/02 ,  F25J2270/04 ,  Y02C10/12 ,  Y10S62/929

    摘要： A process is disclosed for the separation of carbon dioxide and sulfide gases from oil shale retort off-gases, coal gasification off-gases, oxygen fire-flooding or carbon dioxide miscible flood enhanced oil recovery off-gases for recycle to a retort, gasifier or petroleum reservoir or alternately delivery to another process. The process separates the off-gases into an essentially sulfur-free fuel gas and an acid gas for recycle to such a retort, gasifier or reservoir wherein the off-gas is compressed if necessary and cooled to separate the two streams, the acid gas is expanded in an auto refrigeration step to provide the necessary process refrigeration and the acid gas is then recycled to such a retort, gasifier or reservoir. In the oil shale retorting and coal gasification applications, the gas' sulfur constituents are sorbed on spent oil shale particles or coal ash.

    摘要翻译： 公开了一种用于将二氧化碳和硫化物气体从油页岩蒸馏废气，煤气化废气，氧气灭火或二氧化碳可混溶的洪水强化油回收废气中分离出来再循环到蒸馏器，气化器或 石油储层或交替输送到另一个过程。 该方法将废气分解成基本上不含硫的燃料气体和用于再循环到这种蒸馏器，气化器或储存器中的酸性气体，其中如果需要，则废气被压缩并冷却以分离两股物流，酸性气体是 在自动制冷步骤中膨胀以提供必要的工艺制冷，然后将酸性气体再循环到这种蒸馏器，气化器或储存器中。 在油页岩蒸馏和煤气化应用中，气体硫成分吸附在废油页岩颗粒或煤灰上。